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题名: Nutrient resorption is associated with leaf vein density and growth performance of dipterocarp tree species
作者: Zhang, Jiao-Lin1; null(张石宝)2; Chen, Ya-Jun1; Zhang, Yi-Ping1; Poorter, Lourens3
刊名: JOURNAL OF ECOLOGY
出版日期: 2015-05-01
卷号: 103, 期号:3, 页码:541-549
关键词: common garden ; ecophysiology ; nutrient resorption efficiency ; nutrient resorption proficiency ; phloem transport capacity ; tropical rain forest trees
学科分类: Plant Sciences; Ecology
DOI: 10.1111/1365-2745.12392
通讯作者: Zhang,JL (reprint author),Chinese Acad Sci,Key Lab Trop Forest Ecol,Xishuangbanna Trop Bot Garden,Mengla 666303,Peoples R China. ; zjl@xtbg.org.cn
文章类型: Article
英文摘要: Nutrient resorption is important for the nutrient budget of plants, but little is known about which plant traits mediate nutrient resorption, how resorption efficiency is associated with other leaf traits and whether nutrient resorption has an impact on plant growth. In this study, 17 dipterocarp tree species were compared in a common garden experiment. N and P resorption efficiencies were regressed against suites of traits associated with phloem transport capacity (i.e. leaf vein density; D-vein), leaf nutrient conservation traits (e.g. leaf mass per area; LMA) and species growth rate. Across the dipterocarp species studied, N resorption efficiency (percentage N resorbed) was positively correlated with D-vein and leaf thickness. N resorption efficiency was also correlated with D-vein after considering phylogenetic effects. N resorption proficiency (N remaining in senesced leaves) was negatively correlated with D-vein, LMA, leaf thickness and palisade and spongy mesophyll thickness. Senesced-leaf N concentration was still negatively correlated with LMA and leaf thickness after considering phylogenetic effects. N resorption efficiency was positively correlated with both height and diameter growth rates. After considering phylogenetic effect, N resorption efficiency was marginally correlated with diameter growth rate. Green-leaf N concentration was positively correlated with height growth rate after considering phylogenetic effect. P resorption efficiency and proficiency were not related to any of the leaf morphological and anatomical traits, or to species growth rates.Synthesis. These results indicate that higher phloem transport capacity of the dipterocarp species is positively correlated with greater N resorption efficiency and that N resorption proficiency is closely linked with leaf nutrient conservation traits. Growth rates of the dipterocarps are more likely governed by photosynthetic rates associated with green-leaf N concentration than N resorption rates per se. Although P is generally deficient in tropical soils, it appears that N rather than P availability is the key limiting factor for the growth of the dipterocarp species.
类目[WOS]: Plant Sciences ; Ecology
研究领域[WOS]: Plant Sciences ; Environmental Sciences & Ecology
关键词[WOS]: NITROGEN-USE-EFFICIENCY ; LIFE-SPAN ; SPRING GROWTH ; RAIN-FOREST ; RHODODENDRON-FERRUGINEUM ; ACQUISITION STRATEGIES ; PHOSPHORUS FRACTIONS ; ECONOMICS TRAITS ; FOLIAR NUTRIENTS ; EVERGREEN SHRUB
收录类别: SCI
项目资助者: National Natural Science Foundation of China [31270453, 31470470] ; Yunnan Provincial Science and Technology Department [2012HB039] ; CAS '135' programmes [XTBG-T01, XTBG-F01]
语种: 英语
WOS记录号: WOS:000353640500002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/19383
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Peoples R China
3.Wageningen Univ, Forest Ecol & Forest Management Grp, NL-6700 Wageningen, Netherlands
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